gcc/testsuite/c-c++-common/int128-1.c

   1 /* { dg-do run { target int128 } } */
   2 /* { dg-options "-std=gnu99" { target c } } */
   3 /* { dg-options "" { target c++ } } */
   4
   5 #include <stdarg.h>
   6
   7 #ifndef __cplusplus
   8 extern void abort (void);
   9 #else
  10 extern "C" void abort (void);
  11 #endif
  12
  13 #define MK_CONST128(A,B,C,D) \
  14         ( (((unsigned __int128) (unsigned int) A) << 96) \
  15          | (((unsigned __int128) (unsigned int) B) << 64) \
  16          | (((unsigned __int128) (unsigned int) C) << 32) \
  17          | ((unsigned __int128) (unsigned int) D) )
  18
  19 #define MK_CONST128_SIGNED(A,B,C,D) \
  20         ((__int128) MK_CONST128(A, B, C, D))
  21
  22 void foo(int i, ...)
  23 {
  24   __int128 q;
  25   va_list va;
  26
  27   va_start(va, i);
  28   q = va_arg(va, __int128);
  29   va_end(va);
  30
  31   if (q != MK_CONST128_SIGNED (0xfeffffffU, 2U, 3U, 4U))
  32     abort();
  33 }
  34
  35 int main(void)
  36 {
  37   __int128 q = MK_CONST128_SIGNED (0xfeffffffU, 2U, 3U, 4U);
  38
  39   foo(1, q);
  40   return 0;
  41 }